3
Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
MAX
MULTI
F
MULTI
F
TABLE OF CONTENTS
CONTENTS
Safety Instructions ...........................................................................................................................................4
Introduction ......................................................................................................................................................9
Unit Nomenclature ......................................................................................................................................... 11
General Data ................................................................................................................................................. 12
Specifications
............................................................................................................................................................. 13
Typical Multi F/Multi F Max Systems .......................................................................................................................... 15
Refrigerant Piping Requirements ............................................................................................................................... 17
General Installation Guidelines ......................................................................................................................18
Location Selection ...................................................................................................................................................... 18
Inspection ................................................................................................................................................................... 19
Refrigerant Piping ....................................................................................................................................................... 22
Piping Materials and Handling .................................................................................................................................... 30
Piping Preparation ...................................................................................................................................................... 31
Piping Connections ........................................................................................................................................32
IDU to ODU ................................................................................................................................................................ 32
Piping Insulation ......................................................................................................................................................... 35
Drain Piping ................................................................................................................................................................ 37
Electrical Wiring .............................................................................................................................................38
Power Wiring Specifications and Best Practices
........................................................................................................ 39
Power Wiring Specifications and Best Practices/Controller Options
40
Indoor Unit Electrical Connections Guidelines
...........................................................................................................
41
Indoor Unit Electrical Connections Procedure
............................................................................................................
42
Self Diagnosis Functions ...........................................................................................................................................
44
LG SIMS - Self Diagnosis Functions .........................................................................................................................
46
Optional Wall-Mounted Sensor and Controller
...........................................................................................................
48
Troubleshooting .............................................................................................................................................49
Error Codes
...............................................................................................................................................................
49
Cautions for Refrigerant leaks .......................................................................................................................51
Refrigerant Leaks ....................................................................................................................................................... 51
Installation Checklist ......................................................................................................................................52